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应用松毛虫赤眼蜂防治农林害虫,具有省工、安全、无污染、不杀伤天敌等优点,已在我省许多地区推广应用,取得了可喜的防治效果和经济效益。目前生产松毛虫赤眼蜂都以柞蚕剖腹卵作中间寄主,由于其卵粒大,营养丰富,育出的蜂壮,繁殖系数也高,一直被公认是松毛虫赤眼蜂的优良中间寄主。但作者发现,近年来一些老繁蜂单位在高温季节繁蜂时常出现坏卵现象,腐败变质的蚕卵成为影响繁蜂数量和质量的制约因素。如何采取有效措施防止卵粒霉变,是当前赤眼蜂生产过程中急需解决的一个重要问题。为此,从1989～1991年我们选用了“菌虫杀灭剂”进行柞蚕剖腹卵消毒效果的研
The application of trichogramma dendrolimi to control agricultural and forestry pests has the advantages of labor saving, safety, pollution-free, non-destructive natural enemies and has been widely applied in many areas of our province and achieved encouraging control effects and economic benefits. At present, the production of Tricholoma trichogramma are all the intermediate hosts of tussah larvae. Due to their large oocysts, abundant nutrition, strong breeders and high reproductive coefficients, they have long been recognized as excellent intermediate hosts for Trichogramma dendrolimi. However, the authors found that in recent years, some old bumblebee units frequently show bad eggs in breeders during the hot season. The spoiled silkworm eggs have become the limiting factor influencing the quantity and quality of bumble bees. How to take effective measures to prevent ovoid mildew is an important issue urgently needed in the production process of Trichogramma. To this end, from 1989 to 1991, we selected the “bactericide” for tussah laparotomy disinfection